Shutter/ˈʃʌtər/ Definition 1 of 3Pro Tip 1/3Multiple Forms Shutters can be different kinds; panels, folding, rolling, or sliding. The beach house had rolling shutters for storm protection. Pro Tip 2/3Protective Use Shutters often provide protection from weather or offer privacy. During the hurricane, all the shutters were tightly closed. Pro Tip 3/3Decorative Function Besides function, shutters also serve as decoration for windows. The green shutters made the windows look very pretty.